Get-SqlDscRSSetupConfiguration: Add function to retrieve Report Server setup configuration

[johlju]

Pull Request (PR) description

• Public commands:
  • Get-SqlDscInstalledInstance to retrieve installed SQL instances.
  • Get-SqlDscRSSetupConfiguration to retrieve the setup configuration of
    SQL Server Reporting Services or Power BI Report Server (issue #2072).

This Pull Request (PR) fixes the following issues

• Fixes Get-SqlDscRSSetupConfiguration: New command proposal #2072

Task list

• Added an entry to the change log under the Unreleased section of the
  file CHANGELOG.md. Entry should say what was changed and how that
  affects users (if applicable), and reference the issue being resolved
  (if applicable).
• Resource documentation updated in the resource's README.md.
• Resource parameter descriptions updated in schema.mof.
• Comment-based help updated, including parameter descriptions.
• Localization strings updated.
• Examples updated.
• Unit tests updated. See DSC Community Testing Guidelines.
• Integration tests updated (where possible). See DSC Community Testing Guidelines.
• Code changes adheres to DSC Community Style Guidelines.

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This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94%. Comparing base (cbb005b) to head (0ea1fd2).
Report is 17 commits behind head on main.

Additional details and impacted files

@@         Coverage Diff          @@
##           main   #2074   +/-   ##
====================================
  Coverage    94%     94%           
====================================
  Files       101     103    +2     
  Lines      8013    8083   +70     
====================================
+ Hits       7586    7656   +70     
  Misses      427     427           

Flag	Coverage Δ
unit	∅ <100%> (∅)

Files with missing lines	Coverage Δ
source/Public/Get-SqlDscInstalledInstance.ps1	100% <100%> (ø)
source/Public/Get-SqlDscRSSetupConfiguration.ps1	100% <100%> (ø)

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[johlju]

Reviewed 3 of 12 files at r1, 12 of 12 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johlju)